Potential SPOILERS - Armbruster/Anderson
At the end of the movie, when Trigger swaps Dr. Armbruster and Rick Anderson, how would that be a punishment from Armbruster's end? He ends up in a youthful, virile body and has the benefit of the wisdom of his years. In fact, he comes out better in the end. The same could be said for Rick for that matter, ending up in Armbruster's body. Rick, although now in the body of a man in the twilight of his years, is presumably wealthy and with a knock-out trophy wife on his arm.
The situation is not all that bad if you think about it, for either of them.